A fourth installment in the Paranormal Activity franchise is apparently in the works.

A Paramount executive revealed that the success of Paranormal Activity 3 has all but guaranteed that there will be another sequel.

"I can't imagine that we wouldn't make a number four, and I imagine [Paramount Film Group president] Adam Goodman this morning is thinking about the challenge," Don Harris, Paramount's head of domestic distribution, told The Wrap. "I'm sure he's thinking, 'Now what do I do?'"